1. Create a new file, any size will do.
2. Click on File -> Place and select the pdf file. The dialog box will show link and template. Checkmark on Link but DO NOT check template. Click OK
3. The file should display with the bounding box around it. Now click on object -> flatten transparency in the menu. You will get another dialog box to come up. Make sure raster/vector balance is set to 100% vectors. Also check "convert all text to outlines". All other checked boxes are not of great concern when it is the missing font you are after. I have attached a screen shot of the "flatten transparency settings. Click OK.
4. YOU'RE DONE! You now have a pdf file and you did not need the fonts in order to open. IMPORTANT: Keep in mind that this does not help you out if you want to edit the text. If that is needed, then you must buy the font. This simply allows you to open up pdfs without having the necessary fonts installed.
5. The only thing left may be a bounding box that you can remove. In Illustrator, I click on the direct selection tool (shortcut A on keyboard). Drag across the bounding box only. Hit delete twice, and that is now gone.
Fred, maybe you can put this up somewhere as a tutorial.